The ATAD1 gene makes a protein that pulls certain proteins out of cell membranes so they can be reused or removed, which helps cells stay organized. This gene helps your body manage protein quality control, especially in nerve cells, muscle cells, and around mitochondria, the parts of cells that make energy. When both copies of the gene do not work, cells may struggle to clear proteins properly. Some people then develop a rare inherited neurologic condition with low muscle tone, developmental delay, seizures, movement problems, and vision changes.
What is a gene?
A gene is a stretch of DNA that carries instructions your cells use to make molecules or regulate processes in the body. Some genes provide the instructions for producing proteins, which are the functional parts of cells. Others mainly help determine when, where, and how strongly specific processes take place. As a group, genes affect how the body develops and works, and they can influence how you respond to food, stress, or medications. To explore this topic more deeply, you can read more in the LearnHub.
Overview
ATAD1Gene function
What if the gene works
The ATAD1 gene helps cells remove misplaced proteins from membranes, especially around mitochondria, the parts that make energy. This supports protein quality control and healthy nerve cell signaling.
Risk
What if the gene does not work
Biallelic variants in the ATAD1 gene can cause an early onset brain condition with seizures, low muscle tone, developmental delay, and learning difficulties. Milder and more severe variants may affect when symptoms start and how severe they are.
Treatment
What does that mean for your treatment
No ATAD1-specific treatment or drug selection approach is currently established in clinical guidelines. In research, the ATAD1 gene is being studied mainly as a cancer biomarker and possible drug target, because loss of ATAD1 may alter how some tumor cells respond to treatments that trigger cell death.
Conditions associated with ATAD1
Gene function
What if the gene works
Your cells rely on the ATAD1 gene to keep certain membrane proteins in the right place and remove ones that should be cleared. Much of this work happens on mitochondria, the parts of cells that make energy, and on peroxisomes, which help process fats. Understanding ATAD1 gene function helps explain how cells stay organized from day to day.
ATAD1 uses energy from ATP (the cell's fuel) to pull selected proteins out of cell membranes. This lets cells clear proteins that are misplaced, stuck, or ready to be recycled.
On mitochondria, ATAD1 helps keep the outer membrane orderly by removing proteins that should not stay there. This supports smooth energy related cell work and helps maintain a healthy balance of mitochondrial proteins.
ATAD1 also works on peroxisomes, small cell structures that help break down certain fats. By managing membrane proteins there, it supports routine cell cleanup and steady day to day metabolism.
What is a variant?
A genetic variant is a small difference in the DNA sequence within a gene. These differences are common and help make up normal human diversity, including differences in appearance, metabolism, and how the body responds to environmental influences. Many variants do not cause any noticeable effect and are simply part of natural genetic variation. In some situations, though, a variant can change how a gene functions more substantially and may contribute to or cause a genetic condition.
Genetic variants
What if the gene does not work
Variants in the ATAD1 gene can make the protein unstable, reduce its energy-using activity, or impair its ability to pull misplaced proteins away from mitochondria and peroxisomes. How ATAD1 gene variants affect protein function often depends on severity: milder changes may leave some activity, while more severe loss-of-function variants may leave little or no working protein. In people with disease-causing variants, this often goes along with earlier and more pronounced neurologic symptoms.
How variants are linked to conditions
Pathogenic variants in both copies of the ATAD1 gene cause a rare developmental and epileptic encephalopathy. In affected children, variants in the ATAD1 gene are associated with seizures starting early in life, major delays in development, and low muscle tone. Some also have feeding problems, movement changes, or eye findings.
A variant is not necessarily a diagnosis
Genetic variants are a routine part of human biology and are widely seen across the general population. Most do not directly affect health and simply contribute to natural differences between people. For many genes, having a variant associated with a condition points to a possible link rather than a clear diagnosis, particularly when several genes and environmental influences are involved. In other situations, though, one well-characterized variant in a particular gene is enough to confirm a diagnosis.
Are there things that can increase or change my risk?
There is not yet broadly confirmed evidence on specific factors that increase or reduce health risk related to the ATAD1 gene. For many living with an ATAD1-related change, risk is mainly shaped by the exact genetic change rather than day-to-day lifestyle factors, and a doctor or genetic counselor can help explain what it means for your family.
Inheritance of ATAD1 variants
For families trying to understand how ATAD1 gene variants are inherited, the best-established pattern is autosomal recessive. This means a child usually inherits one ATAD1 gene variant from each parent. Parents who each carry one variant are often unaffected themselves, and with each pregnancy there is a 25% chance the child inherits both variants, a 50% chance the child is a carrier, and a 25% chance the child inherits neither variant.
What does my ATAD1 result mean for my family?
For families with a disease-causing ATAD1 result, the pattern is usually recessive, which means close relatives may also be carriers even if they are healthy. Brothers and sisters could also be affected or be carriers, depending on the copies they inherited. Family implications can matter most for siblings and for relatives planning children.
Genetic information
Genetic testing
How you find out about variants
To find changes in the ATAD1 gene, doctors use genetic testing on blood, saliva, or a cheek swab. In genetic testing for ATAD1 variants, a lab reads the gene's DNA code and reports whether a variant is benign, uncertain, or linked to disease.
When should I consider getting a genetic test?
ATAD1 gene changes have been linked to a very rare inherited brain condition that can cause seizures starting early in life, delayed development, and muscle tone problems. Testing may be considered when these signs are present, especially if more than one child in the family is affected or the cause is still unclear.
A genetic result is only one part of your health story
A genetic result can provide valuable insight, but how much it reveals depends on the condition and the kind of variant involved. Lifestyle, environment, age, and medical history are among the many factors that shape how the body functions over time. For some conditions, especially those affected by many genes, genetic information provides context rather than certainty and is most useful when viewed alongside other parts of care. In other situations, a genetic result can offer a clear answer. In areas like medication response, genetic results can also help put individual experiences into context.
Pharmacogenetics
How variants shape your response to medicine
Genetic variation can affect how people respond to medicines. A treatment that works well for one person may work less well for another, or may cause more side effects, because the body can absorb, break down, transport, or respond to drugs differently. These differences are common and can influence how strongly a medicine works or how sensitive someone is to it.
What is Pharmacogenetics?
Pharmacogenetics is the area of study focused on how genetic differences affect the way people respond to medications. It examines gene and drug patterns to help explain why the same treatment may work differently from one person to another. For many medicines, genes influence both how strongly a drug works and how the body handles it. This information can support treatment decisions that are more informed and more personalized. More on this topic is available in the LearnHub.
Drugs influenced by the ATAD1 gene
When should I seek medical advice?
There is not yet a broadly confirmed role for this gene in guiding how medicines are chosen or adjusted. If you have side effects, trouble with a new medicine, or questions about how your health condition affects treatment, talk with your doctor or pharmacist.